Audited Supplier
The load switch is suitable for the rated voltage 12kV, rated current 630A, three-phase AC 50Hz power supply network, with load to break and close the distribution line, can also be used as to break and close the no-load line, no-load transformer, in the opening position, can meet the isolation switch of the isolation power requirements. The load switch can be used for power, metallurgy, mining, chemical and other departments of the transmission and distribution system as a control circuit, but also suitable for frequent operation places
Ambient temperature:+40ºC~-30ºC;
Altitude above sea level not exceed 2000m;
Relative humidity : Daily average value not exceed 95%,Monthly average value not exceed 90%;
No frequent extreme vibration.
Using vacuum arc extinguishing chamber, no explosion danger, no maintenance.
The isolation knife is connected with the three-phase vacuum interrupter, and the isolation fracture is visible when the brake is opened.
All parts of the body are made of stainless steel, and the bottom frame is made of carbon steel with hot dip galvanized plus ultraviolet protection coating to ensure the normal operation of the body in outdoor environment.
The installation mode is mainly single-pole operation, which can be operated manually, electrically or remotely.
Widely used in rural power grid, urban network, railway and other configuration line transformation.
Large breaking capacity, safe and reliable, long electrical life, frequent operation.
| Name | Unit | Data |
| Rated voltage | kV | 12 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630 |
| Rated active load breaking current | A | 630 |
| Rated loop breaking current | A | 630 |
| 5%Rated active load breaking current | A | 31.5 |
| Rated cable charging breaking current | A | 10 |
| Rated no load transformer breaking capacity | kVA | 1600 |
| Rated breaking capacitor bank current | A | 100 |
| P.t withstand voltage for 1min: Across vacuum open contacts. between phases, phase to earth /across open contacts | kV | 42/48 |
| Lightning impulse withstand voltage : between phases,phase to earth /across open contacts | kV | 75/85 |
| Rated short time withstand current | kA | 20 |
| Rated short circuit duration | s | 4 |
| Rated peak withstand current | kA | 50 |
| Rated short circuit making current | kA | 50 |
| Mechanical endurance | Time | 10000 |
| Allowable wear thickNess of contact of vacuum interrupter | mm | 0.5 |
| Operating torque | Nm | ≤200 |
